Hi, When I swiched off my HP PSC 2175 printer (OK, standby mode) today, I got the following Oops:
Sep 17 12:35:22 foko kernel: usb 2-2: USB disconnect, address 6 Sep 17 12:35:22 foko kernel: drivers/usb/class/usblp.c: usblp0: removed Sep 17 12:35:22 foko kernel: Unable to handle kernel paging request at virtual address 00025d60 Sep 17 12:35:22 foko kernel: printing eip: Sep 17 12:35:22 foko kernel: c036b20a Sep 17 12:35:22 foko kernel: *pde = 00000000 Sep 17 12:35:22 foko kernel: Oops: 0000 [#1] Sep 17 12:35:22 foko kernel: PREEMPT Sep 17 12:35:22 foko kernel: Modules linked in: snd_intel8x0 snd_ac97_codec snd_mpu401_uart snd_rawmidi snd_seq_device snd_pcm_oss snd_pcm snd_page_alloc snd_timer snd_mixer_oss snd soundcore Sep 17 12:35:22 foko kernel: CPU: 0 Sep 17 12:35:22 foko kernel: EIP: 0060:[usb_buffer_free+23/70] Not tainted Sep 17 12:35:22 foko kernel: EFLAGS: 00210206 (2.6.8.1) Sep 17 12:35:22 foko kernel: EIP is at usb_buffer_free+0x17/0x46 Sep 17 12:35:22 foko kernel: eax: cd149200 ebx: c155f580 ecx: c9b36cd0 edx: 00025d3c Sep 17 12:35:22 foko kernel: esi: c155f584 edi: dfe0ff80 ebp: c4397f34 esp: c4397f24 Sep 17 12:35:22 foko kernel: ds: 007b es: 007b ss: 0068 Sep 17 12:35:22 foko kernel: Process ptal-mlcd (pid: 9734, threadinfo=c4396000 task=c9b36cd0) Sep 17 12:35:22 foko kernel: Stack: c4397f40 c155f580 c155f584 dfe0ff80 c4397f50 c0381a3e cd149200 00002000 Sep 17 12:35:22 foko kernel: ca784000 0a784000 c155f580 c4397f64 c0381b2c c155f580 ce40bb80 00000000 Sep 17 12:35:22 foko kernel: c4397f88 c014909c cf13920c ce40bb80 cf13920c c9ff076c ce40bb80 00000000 Sep 17 12:35:22 foko kernel: Call Trace: Sep 17 12:35:22 foko kernel: [show_stack+128/150] show_stack+0x80/0x96 Sep 17 12:35:22 foko kernel: [show_registers+346/425] show_registers+0x15a/0x1a9 Sep 17 12:35:22 foko kernel: [die+140/253] die+0x8c/0xfd Sep 17 12:35:22 foko kernel: [do_page_fault+497/1422] do_page_fault+0x1f1/0x58e Sep 17 12:35:22 foko kernel: [error_code+45/56] error_code+0x2d/0x38 Sep 17 12:35:22 foko kernel: [usblp_cleanup+72/167] usblp_cleanup+0x48/0xa7 Sep 17 12:35:22 foko kernel: [usblp_release+87/89] usblp_release+0x57/0x59 Sep 17 12:35:22 foko kernel: [__fput+286/304] __fput+0x11e/0x130 Sep 17 12:35:22 foko kernel: [filp_close+87/129] filp_close+0x57/0x81 Sep 17 12:35:22 foko kernel: [sys_close+99/148] sys_close+0x63/0x94 Sep 17 12:35:22 foko kernel: [syscall_call+7/11] syscall_call+0x7/0xb Sep 17 12:35:22 foko kernel: Code: 8b 4a 24 85 c9 74 07 8b 41 18 85 c0 75 04 89 ec 5d c3 8b 45 It doesn't happen every time; I just tried switching it ON and OFF again, and this time all seems well: Sep 17 19:24:37 foko kernel: usb 2-2: new full speed USB device using address 7 Sep 17 19:24:37 foko kernel: drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 7 if 1 alt 0 proto 2 vid 0x03F0 pid 0x2B11 Sep 17 19:24:37 foko kernel: scsi5 : SCSI emulation for USB Mass Storage devices Sep 17 19:24:37 foko kernel: Vendor: HP Model: psc 2175 Rev: 1.00 Sep 17 19:24:37 foko kernel: Type: Direct-Access ANSI SCSI revision: 02 Sep 17 19:24:37 foko kernel: Attached scsi removable disk sda at scsi5, channel 0, id 0, lun 0 Sep 17 19:24:37 foko kernel: Attached scsi generic sg0 at scsi5, channel 0, id 0, lun 0, type 0 Sep 17 19:24:37 foko kernel: USB Mass Storage device found at 7 Sep 17 19:25:04 foko kernel: usb 2-2: USB disconnect, address 7 Sep 17 19:25:04 foko kernel: drivers/usb/class/usblp.c: usblp0: removed However, I notice that a few days ago, while running Linux 2.6.5, I got a similar Oops: Sep 14 14:44:09 foko kernel: usb 2-2: USB disconnect, address 2 Sep 14 14:44:10 foko kernel: drivers/usb/class/usblp.c: usblp0: removed Sep 14 14:44:10 foko kernel: Unable to handle kernel paging request at virtual address 0000cfe7 Sep 14 14:44:10 foko kernel: printing eip: Sep 14 14:44:10 foko kernel: c0341eb8 Sep 14 14:44:10 foko kernel: *pde = 00000000 Sep 14 14:44:10 foko kernel: Oops: 0000 [#1] Sep 14 14:44:10 foko kernel: PREEMPT Sep 14 14:44:10 foko kernel: CPU: 0 Sep 14 14:44:10 foko kernel: EIP: 0060:[<c0341eb8>] Not tainted Sep 14 14:44:10 foko kernel: EFLAGS: 00010202 (2.6.5) Sep 14 14:44:10 foko kernel: EIP is at usb_buffer_free+0x14/0x38 Sep 14 14:44:10 foko kernel: eax: cf1d0e00 ebx: cb277d80 ecx: 00000000 edx: 0000cfc7 Sep 14 14:44:10 foko kernel: esi: cb277d84 edi: ddf61394 ebp: df71df18 esp: df71df18 Sep 14 14:44:10 foko kernel: ds: 007b es: 007b ss: 0068 Sep 14 14:44:10 foko kernel: Process ptal-mlcd (pid: 671, threadinfo=df71c000 task=df262be0) Sep 14 14:44:10 foko kernel: Stack: df71df40 c0354fde cf1d0e00 00002000 cabdc000 0abdc000 c0490e25 c0490d59 Sep 14 14:44:10 foko kernel: 00000000 cb277d80 df71df54 c03550a6 cb277d80 c8ec1380 c8ec1380 df71df78 Sep 14 14:44:10 foko kernel: c0144588 ddf61394 c8ec1380 c8ec1380 00000000 de523700 dfe341c0 ddf62780 Sep 14 14:44:10 foko kernel: Call Trace: Sep 14 14:44:10 foko kernel: [<c0354fde>] usblp_cleanup+0x32/0x84 Sep 14 14:44:10 foko kernel: [<c03550a6>] usblp_release+0x4a/0x58 Sep 14 14:44:10 foko kernel: [<c0144588>] __fput+0x4c/0x108 Sep 14 14:44:10 foko kernel: [<c0144536>] fput+0x16/0x1c Sep 14 14:44:10 foko kernel: [<c0143133>] filp_close+0x5b/0x68 Sep 14 14:44:10 foko kernel: [<c014319a>] sys_close+0x5a/0x84 Sep 14 14:44:10 foko kernel: [<c0106e1b>] syscall_call+0x7/0xb Sep 14 14:44:10 foko kernel: Sep 14 14:44:10 foko kernel: Code: 8b 42 20 85 c0 74 16 8b 48 18 85 c9 74 0f 8b 45 14 50 8b 45 The printer is a Printer/Scanner/Copier, with 4 slots for various memorycards, but today I haven't used the memorycards, scanner or printer (all I did was notice it was still in the `Power Save' mode, and thus hit the "On/Off" button once to make it active, and then a second time to make it go `off' (LCD display OFF, all LEDs OFF)) Although I doubt it makes any difference, here some more versions: Distro: Debian hpoj 0.91-3 CUPS 1.1.20final+rc1-5 gcc 3.3.4-2 My Linux kernel is not from Debian, but compiled myself; don't know what gcc compiled my 2.6.5 kernel, but the 2.6.8.1 kernel was compiled by 3.3.4-2 # cat /proc/version Linux version 2.6.8.1 ([EMAIL PROTECTED]) (gcc version 3.3.4 (Debian 1:3.3.4-6sarge1)) #2 Tue Sep 14 16:27:40 CEST 2004 Will be happy to supply more info, if needed. -- Groetjes, joostje ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. 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